For score values 9, 10, 12, 13, 13, 13, 15, 15, 16, 16, 18, 22, 23, 24, 24, 25 I get 16 average and 15 mean. Correct values are 16,75 avg and 15,5 mean.
This should be solved in the new commit. Change the some basic types of variables. Also updated the method for calculating median (I had forgotten from how we calculated it in school but now I've updated it :) ).
For score values 9, 10, 12, 13, 13, 13, 15, 15, 16, 16, 18, 22, 23, 24, 24, 25 I get 16 average and 15 mean. Correct values are 16,75 avg and 15,5 mean.